CH655591B - - Google Patents

Info

Publication number
CH655591B
CH655591B CH744180A CH744180A CH655591B CH 655591 B CH655591 B CH 655591B CH 744180 A CH744180 A CH 744180A CH 744180 A CH744180 A CH 744180A CH 655591 B CH655591 B CH 655591B
Authority
CH
Switzerland
Prior art keywords
detector
output signal
circuit
evaluation
properties
Prior art date
Application number
CH744180A
Other languages
German (de)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to CH744180A priority Critical patent/CH655591B/de
Priority to US06/303,630 priority patent/US4418335A/en
Priority to AT81107842T priority patent/ATE21573T1/en
Priority to EP81107842A priority patent/EP0049493B1/en
Priority to DE8181107842T priority patent/DE3175167D1/en
Priority to JP56157627A priority patent/JPS5793495A/en
Publication of CH655591B publication Critical patent/CH655591B/de

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
    • G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J1/46—Electric circuits using a capacitor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S250/00—Radiant energy
    • Y10S250/01—Passive intrusion detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

An infrared intrusion detector, utilizing as a sensor element a pyroelectric detector element, accomplishes evaluation of the output signal of the detector element with a charge amplifier, for instance by means of a capacitive feedback coupled operational amplifier, the output signal of which is reset at certain time intervals. The evaluation circuit operates independently of the detector capacitance and therefore enables optimum utilization of the pyroelectrical properties. By virtue of the short-circuit operation and the low ohmic properties of the circuit there is obtained a particularly good non-sensitivity against external disturbances and low noise and increased sensitivity.
CH744180A 1980-10-06 1980-10-06 CH655591B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH744180A CH655591B (en) 1980-10-06 1980-10-06
US06/303,630 US4418335A (en) 1980-10-06 1981-09-18 Infrared intrusion detector with pyroelectric sensor and charge amplifier
AT81107842T ATE21573T1 (en) 1980-10-06 1981-10-02 INFRARED INTRUSION DETECTOR.
EP81107842A EP0049493B1 (en) 1980-10-06 1981-10-02 Infrared intrusion detector
DE8181107842T DE3175167D1 (en) 1980-10-06 1981-10-02 Infrared intrusion detector
JP56157627A JPS5793495A (en) 1980-10-06 1981-10-05 Detector for intrusion of infrared ray

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH744180A CH655591B (en) 1980-10-06 1980-10-06

Publications (1)

Publication Number Publication Date
CH655591B true CH655591B (en) 1986-04-30

Family

ID=4325174

Family Applications (1)

Application Number Title Priority Date Filing Date
CH744180A CH655591B (en) 1980-10-06 1980-10-06

Country Status (6)

Country Link
US (1) US4418335A (en)
EP (1) EP0049493B1 (en)
JP (1) JPS5793495A (en)
AT (1) ATE21573T1 (en)
CH (1) CH655591B (en)
DE (1) DE3175167D1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157041A (en) * 1984-02-16 1985-10-16 Jorge Caro Bolton Thermal alarm system
US4757337A (en) * 1985-03-26 1988-07-12 Canon Kabushiki Kaisha Release apparatus for a camera
US4633086A (en) * 1985-04-09 1986-12-30 Grumman Aerospace Corporation Input circuit for infrared detector
DE3528646C3 (en) * 1985-08-09 1994-04-07 Hirschmann Richard Gmbh Co Circuit arrangement for an infrared room surveillance detector
GB2206202A (en) * 1987-06-24 1988-12-29 Philips Electronic Associated Infra-red radiation detector
US5034608A (en) * 1989-09-08 1991-07-23 Massachusetts Institute Of Technology Infrared sensor operable without cooling
US5126568A (en) * 1991-07-19 1992-06-30 Grumman Aerospace Corporation Magnetometer input circuit for infrared detectors
US5200623A (en) * 1991-12-04 1993-04-06 Grumman Aerospace Corp. Dual integration circuit
US5330226A (en) * 1992-12-04 1994-07-19 Trw Vehicle Safety Systems Inc. Method and apparatus for detecting an out of position occupant
US5324944A (en) * 1992-12-10 1994-06-28 Hughes Aircraft Company Infrared detection system and method with distributed signal amplification and sampling
US5414263A (en) * 1994-02-24 1995-05-09 Regent Lighting Corporation Infrared detection switching circuit
US5482314A (en) * 1994-04-12 1996-01-09 Aerojet General Corporation Automotive occupant sensor system and method of operation by sensor fusion
US5491334A (en) * 1994-08-22 1996-02-13 Grumman Aerospace Corporation Magneto-optical input system for infrared detectors
US6166625A (en) 1996-09-26 2000-12-26 Donnelly Corporation Pyroelectric intrusion detection in motor vehicles
US6340816B1 (en) 1998-02-27 2002-01-22 Honeywell International, Inc. Pyroelectric detector with feedback amplifier for enhanced low frequency response
US6026340A (en) * 1998-09-30 2000-02-15 The Robert Bosch Corporation Automotive occupant sensor system and method of operation by sensor fusion
US6783167B2 (en) 1999-03-24 2004-08-31 Donnelly Corporation Safety system for a closed compartment of a vehicle
US6485081B1 (en) 1999-03-24 2002-11-26 Donnelly Corporation Safety system for a closed compartment of a vehicle
US6390529B1 (en) 1999-03-24 2002-05-21 Donnelly Corporation Safety release for a trunk of a vehicle
US6086131A (en) * 1999-03-24 2000-07-11 Donnelly Corporation Safety handle for trunk of vehicle
US6768420B2 (en) 2000-11-16 2004-07-27 Donnelly Corporation Vehicle compartment occupancy detection system
US8258932B2 (en) 2004-11-22 2012-09-04 Donnelly Corporation Occupant detection system for vehicle
GB2446338B (en) * 2005-12-09 2011-09-28 Suren Systems Ltd Piezoelectric transducer signal processing circuit
JP2011058861A (en) * 2009-09-08 2011-03-24 Panasonic Corp Pyroelectric infrared detector
CH702300A1 (en) * 2009-11-25 2011-05-31 Kistler Holding Ag Digital charge amplifier.
EP2589939B1 (en) * 2010-07-01 2020-03-18 Panasonic Intellectual Property Management Co., Ltd. Object detection device for objects in a target space
CN104627030A (en) 2013-11-13 2015-05-20 光宝科技股份有限公司 Carrier safety system and safety detecting and processing method for carrier safety system
US9405120B2 (en) 2014-11-19 2016-08-02 Magna Electronics Solutions Gmbh Head-up display and vehicle using the same
DE102020113512A1 (en) 2020-05-19 2021-11-25 Ifm Electronic Gmbh Capacitive sensor circuit with transmitting and receiving electrode and method for operating such

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398281A (en) * 1966-12-27 1968-08-20 Kettering Found Charles F Direct reading, wavelength independent radiometer employing a pyroelectric crystal detector
US3675017A (en) * 1970-08-10 1972-07-04 Doyle W M Shielded pyroelectric detector apparatus and method
US3703718A (en) * 1971-01-07 1972-11-21 Optical Coating Laboratory Inc Infrared intrusion detector system
CH599642A5 (en) * 1976-11-15 1978-05-31 Cerberus Ag
US4068811A (en) * 1977-04-28 1978-01-17 General Electric Company Hotbox detector
GB1551541A (en) * 1977-09-13 1979-08-30 Bloice J A Infrared intrusion detector system
JPS54151295U (en) * 1978-04-12 1979-10-20
US4225786A (en) * 1978-09-15 1980-09-30 Detection Systems, Inc. Infrared detection system
US4341012A (en) * 1980-09-29 1982-07-27 The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration Pyroelectric detector arrays

Also Published As

Publication number Publication date
JPS5793495A (en) 1982-06-10
ATE21573T1 (en) 1986-09-15
EP0049493A1 (en) 1982-04-14
US4418335A (en) 1983-11-29
DE3175167D1 (en) 1986-09-25
EP0049493B1 (en) 1986-08-20

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